Synonyms that are in the dictionary are marked in green. Synonyms that are not in the dictionary are marked in red.
Antonyms that are in the dictionary are marked in green. Antonyms that are not in the dictionary are marked in red.
After it has been deleted, restart your phone or iPad and then re-download the Emoji keyboard from the App Store or another app store of your choice.
Source: https://www.devicemag.com/how-to-reset-emoji-keyboard-on-iphone/
Even those who've been playing it in early access will have to re-download the entire game.